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参数资料
| 型号： | SN74AHCT245DGVR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | AHCT/VHCT/VT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封装： | GREEN, PLASTIC, TVSOP-20 |
| 文件页数： | 18/23页 |
| 文件大小： | 991K |
| 代理商： | SN74AHCT245DGVR |
SN54AHCT245, SN74AHCT245
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCLS233N OCTOBER 1995 REVISED MARCH 2005
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching
characteristics
over
recommended
operating
free-air
temperature
range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
SN54AHCT245
SN74AHCT245
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
A or B
B or A
CL = 15 pF
4.5**
7.7**
1**
10**
1
8.5
ns
tPHL
A or B
B or A
CL = 15 pF
4.5**
7.7**
1**
10**
1
8.5
ns
tPZH
OE
A or B
CL = 15 pF
8.9**
13.8**
1**
16**
1
15
ns
tPZL
OE
A or B
CL = 15 pF
8.9**
13.8**
1**
16**
1
15
ns
tPHZ
OE
A or B
CL = 15 pF
9.2**
14.4**
1**
16.5**
1
15.5
ns
tPLZ
OE
A or B
CL = 15 pF
9.2**
14.4**
1**
16.5**
1
15.5
ns
tPLH
A or B
B or A
CL = 50 pF
5.3
8.7
1
11
1
9.5
ns
tPHL
A or B
B or A
CL = 50 pF
5.3
8.7
1
11
1
9.5
ns
tPZH
OE
A or B
CL = 50 pF
9.7
14.8
1
17
1
16
ns
tPZL
OE
A or B
CL = 50 pF
9.7
14.8
1
17
1
16
ns
tPHZ
OE
A or B
CL = 50 pF
10
15.4
1
17.5
1
16.5
ns
tPLZ
OE
A or B
CL = 50 pF
10
15.4
1
17.5
1
16.5
ns
tsk(o)
CL = 50 pF
1***
1
ns
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
*** On products compliant to MIL-PRF-38535, this parameter does not apply.
noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 5)
PARAMETER
SN74AHCT245
UNIT
PARAMETER
MIN
TYP
MAX
UNIT
VOH(V)
Quiet output, minimum dynamic VOH
4
V
VIH(D)
High-level dynamic input voltage
2
V
VIL(D)
Low-level dynamic input voltage
0.8
V
NOTE 5: Characteristics are for surface-mount packages only.
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
13
pF
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